| Bulb | Bulb solitary, ovoid-globose to subglobose, 1–2 cm diam | Bulb solitary, ovoid-globose to subglobose, 1.5–3.5 cm diam | Bulb solitary, ovoid-globose to subglobose, 1–2 cm diam | Bulb solitary, ovoid-globose to subglobose, 1.1–1.3 cm diam |
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| bulb tunics | Outer tunics gray-black, membranous, not splitting; inner tunics white, membranous | Outer tunics gray-black, membranous, not splitting; inner tunics white, membranous | Outer tunics gray-black, membranous, not splitting; inner tunics white, membranous | Outer tunics gray-black, membranous, not splitting |
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| Scape shape | subterete, with lateral ridges, scape diameter 1–2 mm | subterete, with lateral ridges, scape diameter 2.2–3 subterete, with lateral ridges, scape diameter 1–2 terete, ribbed, ribs with short, thick, triangular mm mm teeth, scape diameter 1–1.5mm |
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| Scape length | (15–)20–52 cm, covered by leaf sheaths only at base | 20–35(–60) cm, covered by leaf sheaths only at base | 15–30(–40) cm, covered by leaf sheaths only at base | 18–28 cm, covered by leaf sheaths only at base |
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| Leaf shape | terete or subterete, hollow, with longitudinal ridges | subsemiterete, hollow, with longitudinal ridges on the back. | flat-linear to subsemiterete, with inconspicuous longitudinal ridges on the back | semiterete, flat on the front and keeled on the back |
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| Leaf length | 18–50(–55) cm | 25–55(–65) cm | (14–)25–45 cm | leaves to 30 cm |
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| Leaf width | 1–1.5(–2.5) mm | 2.5–4(–4.5) mm | 2–3.5(–4) mm | – |
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| Pedicel length | (4.5–)7–11 cm | (4.5–)7–9 cm | 0.8–4(–5) cm | 1.5–4 cm |
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| Spathe | 1–valved, persistent | 1–valved, persistent | 1–valved, persistent | 1–valved, persistent |
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| Tepal color | Red to purplish red | white | Red to purplish red | white |
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| tepals | narrowly ovate, apex with a short acumen, 7–10 mm long, 2–3.2 mm wide; inner tepals usually slightly narrower, connate at base into a tube. | narrowly ovate, apex blunt, 7–12 mm long, 2–3.5 mm wide; inner tepals usually slightly narrower, connate at base into a tube. | narrowly ovate, apex with a short acumen, 5–7(–8) mm long, 1.5–2 (–2.4) mm wide; inner tepals usually slightly narrower, connate at base into a tube. | linear-oblanceolate, 5–7 mm, 1–veined, connate at base into a 1–1.5 mm tube. |
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| Tepal midvein | purple | pale purple | purple | green |
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| Filaments | 1/2 as long as tepals, free portion conical | 1/2 as long as tepals, free portion conical | 1/2 as long as tepals, free portion conical | 2–2.5 mm |
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| Base of filament | basally connate for 2–3 mm and adnate to the coherent tepal tube | basally connate for 2–3 mm and adnate to the coherent tepal tube | basally connate for 2–3 mm and adnate to the coherent tepal tube | connate to middle and adnate to perianth segments |
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| Ovary | 3-loculed, with 2 ovules per locule. | 3-loculed, with 2 ovules per locule, one of which is abortive. | 3-loculed, with 2 ovules per locule. | 3-loculed, with 2 ovules per locule, one of which is abortive in each locule. |
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| Style | exserted, nearly as long as ovary; stigma 3- lobed. | exserted, nearly as long as ovary; stigma 3-lobed. | exserted, nearly as long as ovary; stigma 3-lobed. exserted, stigma (2)3-lobed. |
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| Chromosome number | 2n = 16 | 2n = 32 | 2n = 16 | 2n = 16 |
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| Flowering season | late Jun. to Sep. | Jul. to Sep. | late Jul. to Sep. | Sep. to Oct. |
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| Leaves emerge in March, flowering occurs | Flowers bloom in July, and the leaves remain | Flowers bloom in late July, and the leaves remain Flowers bloom in September, leaves emerge |
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| Growth cycle | in June, leaves wither in late autumn, and regrowth begins the following March. | evergreen throughout the year. | evergreen throughout the year. | in October, wither in late summer of the following year, and regrow in October. |
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